* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
   * Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.

pkg crypto/cipher, func NewOFB(Block, []uint8) Stream
pkg crypto/cipher, method (StreamReader) Read([]uint8) (int, error)
pkg crypto/cipher, method (StreamWriter) Close() error
pkg crypto/cipher, method (StreamWriter) Write([]uint8) (int, error)
pkg crypto/cipher, type Block interface { BlockSize, Decrypt, Encrypt }
pkg crypto/cipher, type Block interface, BlockSize() int

pkg crypto, type PublicKey interface {}
pkg crypto/cipher, func NewGCM(Block) (AEAD, error)
pkg crypto/cipher, type AEAD interface { NonceSize, Open, Overhead, Seal }
pkg crypto/cipher, type AEAD interface, NonceSize() int
pkg crypto/cipher, type AEAD interface, Open([]uint8, []uint8, []uint8, []uint8) ([]uint8, error)
pkg crypto/cipher, type AEAD interface, Overhead() int